Forcep curettage after anesthesia with propofol intravenous injection (observing group) and that with no method to relieve pain(control group).

应用静脉给药麻醉后钳刮(观察组)。与无任何镇痛方法钳刮(对照组)。

OBJECTIVE:To study the adsorption of disposable transfusion connective tube and infusion needle for single use only to nitroglycerin in intravenous injection via minipump.

研究微泵维持静脉注射时一次性液连接管和液针对硝酸甘油吸附作用。

The antipsychotic drug fluphenazine has a prolonged period of action when it is given by intramuscular injection, but not when it is given by intravenous injection.Suggest why this is the case.

精神抑制药氟奋乃定，采用肌肉注射话会有一段反应期，但是采用静脉注射却没有，说明为什么会出现这种情况。